Peptidic prodrugs of novel aminomethyl-THF 1β-methylcarbapenems
摘要:
Peptidic prodrugs of the five most active aminomethyl-THF 1 beta-methylcarbapenems were synthesized. Of these, only L-amino acid derivatives from la demonstrated an improved oral activity. These results indicate that the L-amino acid derivatives from la are orally absorbed most likely through the dipeptide and tripeptide transport mechanism. (C) 1997 Elsevier Science Ltd.
Several water-soluble derivatives (CPT3, CPT3a–d) of camptothecin (CPT) were synthesized, among which CPT3 bearing an N,N′-dimethyl-1-aminoethylcarbamate side-chain was further conjugated with reductively eliminating structural units of indolequinone, 4-nitrobenzyl alcohol and 4-nitrofuryl alcohol to produce novel prodrugs of camptothecin (CPT4–6). All CPT derivatives were of lower cytotoxicity than their parent compound of CPT. In contrast, CPT4 and CPT6 showed higher hypoxia selectivity of cytotoxicity towards tumor cells than CPT. A mechanism by which a representative prodrug CPT4 is activated in the presence of DT-diaphorase to release CPT was also discussed. The bioreduction activated CPT prodrugs including CPT4 and CPT6 are identified to be promising for application to the hypoxia targeting tumor chemotherapy.
Biological Evaluation and Docking Studies of New Carbamate, Thiocarbamate, and Hydrazide Analogues of Acyl Homoserine Lactones as Vibrio fischeri-Quorum Sensing Modulators
作者:Qiang Zhang、Yves Queneau、Laurent Soulère
DOI:10.3390/biom10030455
日期:——
of any activity, docking shows that the orientation of the carbonylgroup is opposite as compared with the natural ligand, leading to the absence of a H-bond between the C=O with Tyr62. This suggests that, either this later interaction, or the influence of the C=O orientation on the overall ligand conformation, are essential for the biological activity.
Self-Immolative Prodrugs: Candidates for Antibody-Directed Enzyme Prodrug Therapy in Conjunction with a Nitroreductase Enzyme
作者:Anthony B. Mauger、Philip J. Burke、Hanif H. Somani、Frank Friedlos、Richard J. Knox
DOI:10.1021/jm00047a002
日期:1994.10
The synthesis and properties of some prodrug candidates for antibody-directedenzymeprodrugtherapy (ADEPT) are described. These compounds have been designed to generate the corresponding active drug upon interaction with a bacterial nitroreductase that can be conjugated to antibodies that recognize tumor-selective antigens. The active drugs included in the study are actinomycin D, mitomycin C, doxorubicin
Stability, Kinetic, and Mechanistic Investigation of 1,8-Self-Immolative Cinnamyl Ether Spacers for Controlled Release of Phenols and Generation of Resonance and Inductively Stabilized Methides
作者:Siddharth S. Matikonda、Jessica M. Fairhall、Joel D. A. Tyndall、Sarah Hook、Allan B. Gamble
DOI:10.1021/acs.orglett.6b03695
日期:2017.2.3
respectively. The α-methyl spacer releases a phenol (pKa 7.8) with a t1/2 = 27 and 54 min. For the γ-methyl spacer, the results suggest the presence of a resonance and inductively stabilized aza-cinnamyl methide.
已经合成了三种用于笼蔽酚的肉桂醚间隔基(非甲基,α-甲基和γ-甲基),它们在生理上是稳定的。触发时,γ-甲基间隔基在水溶液和有机溶剂中的t 1/2 <30 s和<2 min时分别释放出苯酚(p K a 7.8和9.8)。α-甲基间隔基释放出苯酚(p K a 7.8),t 1/2 = 27和54分钟。对于γ-甲基间隔基,结果表明存在共振和电感稳定的氮杂肉桂酸甲酯。
Nitroarylmethylcarbamate prodrugs of doxorubicin for use with nitroreductase gene-directed enzyme prodrug therapy
作者:Michael P. Hay、William R. Wilson、William A. Denny
DOI:10.1016/j.bmc.2005.03.055
日期:2005.6
A series of nitrobenzyl- and nitroimidazolylmethyl carbamate prodrugs of doxorubicin were prepared and evaluated for their potential use in nitroreductase (NTR) mediated gene-directedenzymeprodrugtherapy (GDEPT). The carbamate prodrugs and doxorubicin were tested in a cell line panel comprising parental and NTR transfected human (SKOV3/SKOV3-NTR(neo), WiDr/WiDr-NTR(neo)), Chinese hamster (V79/V79-NTR(puro))